伽玛射线噪Blazar的亮温度研究  

Study of brightness temperature for γ-ray loud blazars

作　　者：杨颖[1] 李文浩[1] 周永杰[1] 叶志辉[1] 樊军辉[1] 

机构地区：[1]广州大学物理与电子工程学院,广东广州510006

出　　处：《湖南文理学院学报（自然科学版）》2014年第4期22-24,共3页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：国家自然科学基金(NSFC 11173009);珠江学者(GDUPS-2009);羊城学者(10A027S)

摘　　要：通过Blazar的伽玛射线光度与亮温度的关系讨论了伽玛辐射的喷流效应.从一些文献中收集了50个伽玛射线噪Blazar天体的伽玛射线、X射线资料和相应的亮温度.该样本中包括16个蝎虎天体(BL Lac)和34个平谱射电类星体(FSRQs).研究了光度与亮温度之间的关系,结果表明亮温度与伽玛射线和X射线光度都存在相关,这一结果说明伽玛射线和X射线都具有强喷流效应.The beaming effect in theγ-rays was studied by using the correlation between theγ-ray luminosity and the brightness temperature. By compiling γ-ray and X-ray luminosity and corresponding brightness temperature for a sample of 50γ-ray loud blazars, out of which there are 16 BL Lacertae objects （BL Lacs） and 34 flat spectrum radio quasars （FSRQs）, the relationship between the luminosities and brightness temperatures was discussed. The results show that bothγ-ray and X-ray are correlated with brightness temperature, which can be explained by a strong effect of jet on bothγ-ray and X-ray emissions.

关 键 词：活动星系核 BLAZAR天体 伽玛射线 X射线 喷流 

分 类 号：P157[天文地球—天文学]